<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="../../vue.js"></script>
</head>

<body>
    <div id="app">
        <div style="width: 100px;height: 100px; background: hotpink;"></div>
        <div :style="divStyle"></div>
        <div :style="divStyleArr"></div>
        <div style="height:200px;width:200px" :style="{background:bgColor}"></div>
    </div>

    <script>
        Vue.config.productionTip = false
        const vm = new Vue({
            el: "#app",
            data() {
                return {
                    divStyle: {
                        width: "120px",
                        height: "120px",
                        background: "pink"
                    },
                    divStyleArr: [{
                        width: "150px",
                    }, {
                        height: "150px",
                    }, {
                        background: "red",
                    }],
                    bgColor: "black",
                }
            }
        })
    </script>
</body>

</html>